Roofing shingle



P. M DONALD ROOFING SHINGLE Oct. 20, 1953 Filed Jan. 25, 1952 2 Sheets-Sheet l INVENTOR. Paul fiZacfloflcrld flz iorlzc 'ys Oct. 20, 1953 P. MacDo 2,655,880

ROOFING SHINGLE Fil'ed Jan. 23, 1952 2 Sheets-Sheet 2 .INVENTOR. Paul IZZacDozzaZcZ BY 2" MZZZM Patented Oct. 20,

UNITED STATES iATENT omcs Paul MacDonald, Lake Forest, 111., assignor to Sears, Roebuck and 00., chic-ago, 111., a corporation of New York Application January 23, 1952, Serial No. 267,760

(Cl. ms-=7) 4 Claims.

My invention relates to roofing shingles of the type generally known in the art as strip roofing shingles. These products as a class have been known for a long time as exemplified by such United States patents as No. 1,510,534. to Abra ham, dated October '7, 1924.

Shingles of this type are preferably formed of plastic sheet material of suitable composition giving them the desired properties of waterproofness and flexibility and have for a long time been made in multiples, with interlocking tongues and slots to facilitate rapid attachment to a roof, hence the term strip shingle. I

My. invention contemplates improvements in shingles of this generally well known type which improvements offer marked advantages over those previously known, as will be hereinafter fully described.

Referring to the drawings forming a part of this specification and illustrating certain preferred embodiment of my invention:

Fig. 1 is a plan view of an improved multiple shingle constituting one embodiment of my invention;

Fig. 2 is a fragmentary plan view showing a strip of plastic sheeting cut to form a plurality of shingles as illustrated in Fig. 1;

Fig. 3 is a plan view of a roof illustrating the manner in which shingles of Fig. l are laid there- Fig. 4 is a plan view of the shingle of Fig. 1 in the position in which it is applied to the edge of Fig. 5 is a plan view of a shingle comprising a modified form of my invention; and

Figs. 6-8 are similar, respectively, to but with the modified shingle of Fig. 5.

Shingles embodying my invention may be cut from a standard 36" wide roll of roofing material, as seen in Figs. 2 and 6', respectively, the same comprising a sheet indicated at I0 and I0, respectively. Said roof sheeting material may be of any known or other type suitable for roofing and siding. Said material usually comprises an asphaltic bas with or without the addition of comminuted mineral material. Said sheeting is resistant to weather and has a relatively high degree of flexibility.

As seen in Figs. 2 and 6, said sheeting may be cut in a single operation by means of a suitable roller die into a pair of strips, along the line H or H, each strip being subdivided into a plurality of shingles, as illustrated, for example, in Figs. 1 and 5.

The shingle l2,

Figs. 2-4,

shown in Fig. 1, comprises a plurality of similar units, preferably three, as this number has been found especially convenient in laying operations. The composite shingle comprises a plurality of spaced hook-like members i5, |5a and I51), hook l5 being formed at one extremity of the shingle. Immediately above each of the hook-like members is a notch indicated at I6, I60. and Nib. It will be seen that in the cut-.- ting of the shingles, as seen in Fig. 2. a notch is formed in one shingle by the cutting of a hook in the opposite shingle in the strip.

Assuming the width or a single shingle to be the material disposed between two hook members, as designated by the dotted lines It in Fig. 1, a slot as is provided intermediate the side extremities of each shingle. The slots 20 are of a width and depth sufficient to receive a hook member.

Each individual shingle comprises a bottom edge 2| and the multiple shingle is bounded by a single straight line 23 extending at a bias to the bottom edges 2|, preferably about 20 degrees. Each edge 2| is spaced from the corresponding edge of the next adjacent shingle by the depth of one of the hooks and one of the notches.

The manner in which my improved shingles are laid is shown in Figs. 3 and 4. Each multiple shingle is laid with the edges 2| parallel to one edge of the roof, say, the bottom edge E of the dormer type seen in Fig. 3. When the shingles are laid and the hooks and notches interlocked, an appearance of staggered shingles is given to the finished roof similar to that of a natural wooden or slate shingle. The portions of the shingle strips extending beyond roof edge E are cut off for use on other parts of the roof.

The embodiment of Figs. 5-8 is substantially similar to that of Figs. 1-4 except that slots 20 are disposed adjacent the end of the individual shingle opposite the hook member thereof instead of intermediate the sides thereof. Otherwise, the multiple shingle l2 is substantially similar to shingle i2 and is laid in substantially the same manner as the other embodiment.

In the embodiment of Figs. 5-8 it will be seen that the finished roof takes on a different appearance, the shingles in this embodiment appearing to be laid in even rows rather than in the staggered relation seen in Fig. 3, even though the same degree of overlapping coverage is provided.

Among the advantages obtained in the use of my improved shingle, it is found that they provid a high resistance against wind damage by reason of the eiiective interlock between adjoining shingles, provided by the hooks, notches and slots. Furthermore, a full 1 0% d u le co r is provided with substantial head lap at all points. The latter represents a marked improvement over the known forms of 3-in-1 strip shingles, which ordinarily provide only about 97% double coverage.

Shingles embodying my invention require only three or four nails per strip as compared with standard forms of 3-in-1 shingles which require six nails per strip to met F. H. A. specifications.

It will be seen, furthermore, that the cutting of my improved shingles can be effected with substantially no lost or waste material, four strips being cut simultaneously from a single sheet of material. In the laying of the strips there is substantially no loss as the parts out ofi at one edge can be employed at the other edge of the roof with no marring of pattern or loss of interlocking parts.

Of course, instead of cutting four strips simultaneously from a sheet as shown, a single pair of strips might be cut from a narrower roll, or more pairs from a wider roll of material, as desired.

While the present invention has been explained and described with reference to particular embodiments, it will be understood that other modifications and variations may be made without departing from the essential spirit or scope thereof. It is, accordingly, not intended that I be limited by the particular forms shown in the accompanying drawings nor by the specific language employed in the foregoing description except as indicated in the appended claims.

I claim:

1. A multiple shingle strip comprising a sheet of flexible material having a substantially uninterrupted straight edge on one side thereof and a plurality of parallel edges on the other side on a bias to said uninterrupted edge, said biased edges being adapted to form the exposed edge of an individual shingle, a projecting lock member formed at an extremity of each of said biased edges, and an edge perpendicular to each of said biased edges and adjacent each of the lock members to define an individual shingle lateral boundary, and a slot extending inwardly and perpendicularly from each of said biased edges for receiving one of the lock members.

2. A combination as defined in claim 1, wherein said slots are disposed intermediate each pair of lock member so that when the locks and slots are interengaged in cooperating strips a staggered shingle effect is produced.

3. A combination as defined in claim 1, wherein the slots are disposed at the side of the individual shingles opposite the lock members so that when the locks and slots are interengaged the individual shingles appear to be disposed in nonstaggered rows.

4. An article as defined in claim 1, wherein the lock members are hook shaped.

PAUL MACDONALD.

References Cited in the file of this patent UNITED STATES PATENTS Number 

